Buenos Aires, Argentina → Lima, Peru · ✈ 4h 25min · 🚗 50h 59min
1,694 nautical miles · Time difference: -1h behind · Direction: northwest
The distance from Buenos Aires to Lima is 3,137 km (1,949 miles). The fastest way to travel is by flight. A direct flight takes approximately 4h 25min.
The straight-line distance from Buenos Aires, Argentina to Lima, Peru is approximately 3,137 kilometers (1,949 miles or 1,694 nautical miles). This measurement uses the Haversine formula, computing the great-circle distance — the shortest path between two points on Earth's surface.
Lima is located northwest of Buenos Aires. Buenos Aires is in South America, in the Buenos Aires region of Argentina, while Lima is in South America, in Lima, Peru. Both cities are in South America.
| Mode | Distance | Est. Time | Best For |
|---|---|---|---|
| ✈️ Flight | 3,137 km | ~4h 25min | Best option for speed |
| 🚗 Drive | ~4,078 km | ~50h 59min | Long journey, consider stops |
Our recommendation: flight is typically the best way to travel from Buenos Aires to Lima. For 3,137 km, flying saves significant time and is usually the most practical choice.
Based on an estimated road distance of 4,078 km, fuel costs for driving from Buenos Aires to Lima are approximately $326–$612 USD (at $0.08–$0.15 per km, depending on vehicle efficiency and local fuel prices). Additional costs may include tolls, parking, and accommodation for longer trips.
Buenos Aires sits at 34.6037°S, 58.3816°W, while Lima is located at 12.0464°S, 77.0428°W. The initial compass bearing from Buenos Aires to Lima is 319° (NW), so a great-circle flight path leaves Buenos Aires heading roughly NW. Because the Earth is curved, the actual heading shifts gradually along the route — pilots and navigation systems update it continuously instead of holding a single fixed compass bearing.
The latitude difference is 22.56° and the longitude difference is 18.66°. Each degree of latitude represents about 111 km, which is one reason cross-latitude routes feel longer even when the map looks similar to east–west journeys.
The geographic midpoint between Buenos Aires and Lima is approximately 23.6017°S, 68.5217°W. This is the great-circle halfway position — the spot where you would be exactly 1,569 km from each city. On long-haul flights this point usually falls over open ocean or remote terrain, which is why in-flight maps often look "empty" mid-route.
Lima is roughly 1 hour behind Buenos Aires. When it is 09:00 in Buenos Aires, it is approximately 08:00 in Lima. Daylight saving time can shift the offset by an hour during certain months, so confirm the exact difference for your specific travel dates.
Buenos Aires uses the Argentine Peso (ARS), while Lima uses the Peruvian Sol (PEN). Plan to exchange currency before departure or use a low-fee travel card on arrival — airport rates are typically the worst available. Both destinations share Spanish as a primary language, simplifying signage, transit, and everyday interactions.
Buenos Aires is a major city in Argentina with a population of approximately 3,075,646. Located in the Buenos Aires region, it is an important hub in South America. Buenos Aires is a significant metropolitan area in Argentina with good domestic and international transport connections.
→ See all distances from Buenos Aires
Lima is a notable city in Peru with a population of approximately 10,092,000. Situated in the Lima region, it serves as a key destination in South America. Lima is one of Peru's largest cities, offering major airport hubs, extensive public transport, and a wide range of accommodation options.
3,137 km is a long-distance route that typically requires air travel. This is comparable to spanning a large continent. For context, London to Dubai is about 5,500 km.
The 3,137 km between Buenos Aires and Lima means a beam of light could travel this distance in approximately 10.5 milliseconds — but a flight still takes 4h 25min.
Combined, Buenos Aires and Lima have a population of over 13,167,646 people, making this a major urban corridor.
See how the Buenos Aires to Lima distance compares to similar routes:
The straight-line distance from Buenos Aires to Lima is approximately 3,137 kilometers (1,949 miles, 1,694 nautical miles).
A direct flight takes approximately 4h 25min, based on 800 km/h cruising speed plus 30 minutes for takeoff and landing.
Estimated driving time is approximately 50h 59min, based on 80 km/h average speed and roads being ~30% longer than straight-line distance.
Lima is approximately -1h behind compared to Buenos Aires.
The estimated road distance is approximately 4,078 km, which is about 30% longer than the 3,137 km straight-line distance.
📍 Data: Coordinates from OpenStreetMap contributors. Distances calculated using the Haversine formula. Travel times are estimates only. Last verified: April 21, 2026.